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    • Extensions of set functions 

      Ovchinnikov, Sergei V.; Falmagne, Jean-Claude (Universitat Politècnica de Catalunya. Secció de Matemàtiques i Informàtica, 2003)
      Article
      Open Access
      We establish a necessary and suficient condition for a function defined on a subset of an algebra of sets to be extendable to a positive additive function on the algebra. It is also shown that this condition is necessary ...